The O2 sensor used by PHCbi is using Zirconia Ceramic as a media to measure the O2 concentration in our equipment. This results in a sensor with non-moving parts with a long-life track record.
The Zirconia element is heated up to over 400 degrees using electricity. This makes it possible for the Zirconia be conductive to electricity. This way the actual low voltage signal of the Sensor is capable of transferring electrodes from 1 side of the Zirconia element to the other side. Creating a currency value, that is then converted into an O2 percentage value. Low currency signal, means low O2 percentage, High currency signal, means high O2 signal.
When there is low amount of contact with O2, there is low amount of transport of electrodes from 1 side to the other side, creating low currency signal that is then transferred into a percentage value. A low percentage value.